build(deps-dev): update ruff requirement in the pip group

Updates the requirements on [ruff](https://github.com/astral-sh/ruff) to permit the latest version.

Updates `ruff` to 0.15.0
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@v0.0.18...0.15.0)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.0
  dependency-type: direct:development
  dependency-group: pip
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -30,7 +30,7 @@ requires-python = ">=3.11"
 lint = [
     # NOTE: ruff is under active development, so we pin conservatively here
     # and let Dependabot periodically perform this update.
-    "ruff < 0.14.14",
+    "ruff < 0.15.1",
     "mypy >= 1.0",
     "types-pyyaml",
     "types-pyOpenSSL",